Microprocessor system for controlling or regulating at least partly security-critical processes
A microprocessor and security technology, applied in response to error generation, hardware redundancy for data error detection, redundant code for error detection, etc., can solve problems such as non-symmetrical design of memory, and achieve simplification The effect of the design
Active Publication Date: 2008-08-13
CONTINENTAL AUTOMOTIVE SYST SHANGHAI
View PDF2 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The bus system associated with such a microprocessor system is similarly provided in duplicate, but for cost reasons the memory does not have a completely symmetrical design
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0039] The microcontroller in Fig. 1 comprises two central processing units (CPUs) 1, 2, which operate in a clock-synchronized fashion. Both microcomputers execute the same program. Each unit has its own separate associated address and data bus. The CPU 1 has a full data storage device 7 connected thereto. In addition, the microprocessor system contains a comparator 3 which takes the form of a hardware unit and is used to continuously compare the queued addresses and data on the two bus systems with each other. If there is a mismatch, an error signal is generated. For the purpose of simplifying the illustration, the figures do not show in more detail components that are typically found in a microprocessor system, such as input / output units, read-only memory, etc. These not shown components are essentially based on the redundant core microcontroller described in WO99 / 35543.
[0040] The test data storage device 5 on the first bus has a storage capacity which is reduced by a...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A microprocessor system for controlling or regulating at least some safety-critical processes. A microprocessor system (60) for controlling or regulating at least some safety-critical processes, comprising: two central processing units (1, 2) integrated in a chip package; a first and a second bus system; At least one full memory (7) on a bus system; test data in one or more test data storage devices linked to data in a memory on the first bus system; wherein the test data storage device is smaller than the full memory, the bus system contains comparison and / or driver components, which allow data exchange and / or data comparison between two bus systems, wherein the test data storage is arranged on the first bus system and the second bus system does not There is disposed thereon a memory or test data storage means for backing up data in the memory on the first bus. The invention also relates to the use of the microprocessor system described above in a motor vehicle controller.
Description
technical field [0001] The invention relates to a microprocessor system according to claim 1 and its use in a motor vehicle controller. Background technique [0002] DE 195 29 434 A1 (P7959) discloses a microprocessor system for safety-critical applications according to the preamble of claim 1 . For reasons of redundancy, such microprocessor systems contain two microprocessor cores of the same type (core redundancy), which execute the same program clock-synchronously and in parallel. The bus system associated with such a microprocessor system is similarly provided in duplicate, but for cost reasons the memory does not have a completely symmetrical design. It has been found that a high false recognition rate can be achieved if one of the two bus systems only stores test data in a test data storage device with a relatively low storage capacity. The test data is unambiguously associated with full data in full memory. Thus, each of the two cores makes all the data available i...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/10G06F11/16
Inventor W·法伊A·基施鲍姆A·特雷斯科夫
Owner CONTINENTAL AUTOMOTIVE SYST SHANGHAI